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1c728f2d6d
V3d_Viewer::AddZLayer() has been replaced by V3d_Viewer::InsertLayerBefore() and V3d_Viewer::InsertLayerAfter() methods allowing to specify Layer settings and index of existing layer to insert new one before/after. The behavior of V3d_Viewer::AddZLayer() has been adjusted to append new Layer before Graphic3d_ZLayerId_Top (between Graphic3d_ZLayerId_Default and Graphic3d_ZLayerId_Top). Graphic3d_Layer now provides LayerId() property. Graphic3d_ZLayerSettings has been extended with IsRaytracable() property; Ray-Tracing now processes multiple layers instead of Graphic3d_ZLayerId_Default. Moved some methods from OpenGl_View to the base class Graphic3d_CView.
209 lines
9.0 KiB
C++
209 lines
9.0 KiB
C++
// Created on: 2011-10-20
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// Created by: Sergey ZERCHANINOV
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// Copyright (c) 2011-2014 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#ifndef _OpenGl_GraphicDriver_HeaderFile
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#define _OpenGl_GraphicDriver_HeaderFile
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#include <Graphic3d_GraphicDriver.hxx>
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#include <Aspect_Display.hxx>
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#include <Aspect_DisplayConnection.hxx>
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#include <Aspect_RenderingContext.hxx>
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#include <Graphic3d_CView.hxx>
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#include <Graphic3d_CStructure.hxx>
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#include <NCollection_DataMap.hxx>
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#include <OpenGl_Context.hxx>
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class Aspect_Window;
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class Quantity_Color;
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class OpenGl_Structure;
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class OpenGl_View;
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class OpenGl_Window;
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//! Tool class to implement consistent state counter
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//! for objects inside the same driver instance.
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class OpenGl_StateCounter
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{
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public:
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OpenGl_StateCounter() : myCounter (0) { }
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Standard_Size Increment() { return ++myCounter; }
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private:
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Standard_Size myCounter;
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};
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//! This class defines an OpenGl graphic driver
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class OpenGl_GraphicDriver : public Graphic3d_GraphicDriver
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{
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DEFINE_STANDARD_RTTIEXT(OpenGl_GraphicDriver, Graphic3d_GraphicDriver)
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public:
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//! Constructor.
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//! @param theDisp connection to display, required on Linux but optional on other systems
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//! @param theToInitialize perform initialization of default OpenGL context on construction
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Standard_EXPORT OpenGl_GraphicDriver (const Handle(Aspect_DisplayConnection)& theDisp,
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const Standard_Boolean theToInitialize = Standard_True);
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//! Destructor.
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Standard_EXPORT virtual ~OpenGl_GraphicDriver();
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//! Release default context.
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Standard_EXPORT void ReleaseContext();
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//! Perform initialization of default OpenGL context.
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Standard_EXPORT Standard_Boolean InitContext();
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#if defined(HAVE_EGL) || defined(HAVE_GLES2) || defined(OCCT_UWP) || defined(__ANDROID__) || defined(__QNX__)
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//! Initialize default OpenGL context using existing one.
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//! @param theEglDisplay EGL connection to the Display
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//! @param theEglContext EGL rendering context
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//! @param theEglConfig EGL configuration
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Standard_EXPORT Standard_Boolean InitEglContext (Aspect_Display theEglDisplay,
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Aspect_RenderingContext theEglContext,
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void* theEglConfig);
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#endif
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//! Request limit of graphic resource of specific type.
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Standard_EXPORT virtual Standard_Integer InquireLimit (const Graphic3d_TypeOfLimit theType) const Standard_OVERRIDE;
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public:
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Standard_EXPORT virtual Handle(Graphic3d_CStructure) CreateStructure (const Handle(Graphic3d_StructureManager)& theManager) Standard_OVERRIDE;
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Standard_EXPORT virtual void RemoveStructure (Handle(Graphic3d_CStructure)& theCStructure) Standard_OVERRIDE;
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Standard_EXPORT virtual Handle(Graphic3d_CView) CreateView (const Handle(Graphic3d_StructureManager)& theMgr) Standard_OVERRIDE;
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Standard_EXPORT virtual void RemoveView (const Handle(Graphic3d_CView)& theView) Standard_OVERRIDE;
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Standard_EXPORT virtual Handle(OpenGl_Window) CreateRenderWindow (const Handle(Aspect_Window)& theWindow, const Aspect_RenderingContext theContext);
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public:
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Standard_EXPORT void TextSize (const Handle(Graphic3d_CView)& theView,
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const Standard_CString theText,
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const Standard_ShortReal theHeight,
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Standard_ShortReal& theWidth,
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Standard_ShortReal& theAscent,
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Standard_ShortReal& theDescent) const Standard_OVERRIDE;
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Standard_EXPORT Standard_ShortReal DefaultTextHeight() const Standard_OVERRIDE;
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Standard_EXPORT Standard_Boolean ViewExists (const Handle(Aspect_Window)& theWindow, Handle(Graphic3d_CView)& theView) Standard_OVERRIDE;
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public:
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//! Adds a layer to all views.
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//! @param theLayerId [in] id of new layer, should be > 0 (negative values are reserved for default layers).
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//! @param theSettings [in] new layer settings
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//! @param theLayerAfter [in] id of layer to append new layer before
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Standard_EXPORT virtual void InsertLayerBefore (const Graphic3d_ZLayerId theNewLayerId,
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const Graphic3d_ZLayerSettings& theSettings,
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const Graphic3d_ZLayerId theLayerAfter) Standard_OVERRIDE;
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//! Adds a layer to all views.
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//! @param theLayerId [in] id of created layer
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//! @param theSettings [in] new layer settings
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//! @param theLayerBefore [in] id of layer to append new layer after
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Standard_EXPORT virtual void InsertLayerAfter (const Graphic3d_ZLayerId theNewLayerId,
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const Graphic3d_ZLayerSettings& theSettings,
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const Graphic3d_ZLayerId theLayerBefore) Standard_OVERRIDE;
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//! Removes Z layer. All structures displayed at the moment in layer will be displayed in
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//! default layer (the bottom-level z layer). By default, there are always default
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//! bottom-level layer that can't be removed. The passed theLayerId should be not less than 0
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//! (reserved for default layers that can not be removed).
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Standard_EXPORT void RemoveZLayer (const Graphic3d_ZLayerId theLayerId) Standard_OVERRIDE;
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//! Sets the settings for a single Z layer.
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Standard_EXPORT void SetZLayerSettings (const Graphic3d_ZLayerId theLayerId, const Graphic3d_ZLayerSettings& theSettings) Standard_OVERRIDE;
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public:
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//! @return the visualization options
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inline const OpenGl_Caps& Options() const
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{
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return *myCaps.operator->();
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}
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//! @return the visualization options
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inline OpenGl_Caps& ChangeOptions()
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{
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return *myCaps.operator->();
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}
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//! Specify swap buffer behavior.
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Standard_EXPORT void SetBuffersNoSwap (const Standard_Boolean theIsNoSwap);
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//! VBO usage can be forbidden by this method even if it is supported by GL driver.
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//! Notice that disabling of VBO will cause rendering performance degradation.
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//! Warning! This method should be called only before any primitives are displayed in GL scene!
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Standard_EXPORT void EnableVBO (const Standard_Boolean theToTurnOn) Standard_OVERRIDE;
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//! Returns information about GPU memory usage.
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//! Please read OpenGl_Context::MemoryInfo() for more description.
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Standard_EXPORT Standard_Boolean MemoryInfo (Standard_Size& theFreeBytes,
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TCollection_AsciiString& theInfo) const Standard_OVERRIDE;
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public:
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//! Method to retrieve valid GL context.
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//! Could return NULL-handle if no window created by this driver.
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//! @param theBound if TRUE then currently bound context will be returned,
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//! any context will be returned otherwise
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Standard_EXPORT const Handle(OpenGl_Context)& GetSharedContext (bool theBound = false) const;
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#if defined(HAVE_EGL) || defined(HAVE_GLES2) || defined(OCCT_UWP) || defined(__ANDROID__) || defined(__QNX__)
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Aspect_Display getRawGlDisplay() const { return myEglDisplay; }
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Aspect_RenderingContext getRawGlContext() const { return myEglContext; }
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void* getRawGlConfig() const { return myEglConfig; }
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#endif
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//! Set device lost flag for redrawn views.
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Standard_EXPORT void setDeviceLost();
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public:
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//! State counter for OpenGl structures.
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OpenGl_StateCounter* GetStateCounter() const { return &myStateCounter; }
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//! Returns unique ID for primitive arrays.
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Standard_Size GetNextPrimitiveArrayUID() const { return myUIDGenerator.Increment(); }
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protected:
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Standard_Boolean myIsOwnContext; //!< indicates that shared context has been created within OpenGl_GraphicDriver
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#if defined(HAVE_EGL) || defined(HAVE_GLES2) || defined(OCCT_UWP) || defined(__ANDROID__) || defined(__QNX__)
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Aspect_Display myEglDisplay; //!< EGL connection to the Display : EGLDisplay
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Aspect_RenderingContext myEglContext; //!< EGL rendering context : EGLContext
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void* myEglConfig; //!< EGL configuration : EGLConfig
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#endif
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Handle(OpenGl_Caps) myCaps;
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NCollection_Map<Handle(OpenGl_View)> myMapOfView;
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NCollection_DataMap<Standard_Integer, OpenGl_Structure*> myMapOfStructure;
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mutable OpenGl_StateCounter myStateCounter; //!< State counter for OpenGl structures.
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mutable OpenGl_StateCounter myUIDGenerator; //!< Unique ID counter for primitive arrays.
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};
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DEFINE_STANDARD_HANDLE(OpenGl_GraphicDriver, Graphic3d_GraphicDriver)
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#endif //_OpenGl_GraphicDriver_HeaderFile
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